Overview Product Description Flat top. 1.741" CH. Use R39158 or C39158 rings.; Sizes : 040 Product Videos Custom Field Product Reviews Write a Review Write a Review × Engine Components Engine Piston Set - Kit Part - P3004(8) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments